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 <h1><center>基于Kubernetes集群构建MongoDB</center></h1>
 作者：行癫（盗版必究）
 ------
 ## 一：基础环境
 1.Kubernetes集群正常运行
 ![image-20231122095145370](https://diandiange.oss-cn-beijing.aliyuncs.com/image-20231122095145370.png)
 2.Harbor私有仓库正常运行
 ![image-20231122095408602](https://diandiange.oss-cn-beijing.aliyuncs.com/image-20231122095408602.png)
 ## 二：MongoDB项目部署
 	MongoDB项目对应Kubernetes的yaml文件：
 ```yaml
 ---
 apiVersion: v1
 kind: Namespace
 metadata:
  name: mongodb
 ---
 apiVersion: apps/v1
 kind: Deployment
 metadata:
  labels:
    k8s.kuboard.cn/layer: web
    k8s.kuboard.cn/name: mongodb
  name: mongodb
  namespace: mongodb
 spec:
  progressDeadlineSeconds: 600
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s.kuboard.cn/layer: web
      k8s.kuboard.cn/name: mongodb
  strategy:
    rollingUpdate:
      maxSurge: 25%
      maxUnavailable: 25%
    type: RollingUpdate
  template:
    metadata:
      creationTimestamp: null
      labels:
        k8s.kuboard.cn/layer: web
        k8s.kuboard.cn/name: mongodb
    spec:
      containers:
        - env:
            - name: MONGO_INITDB_ROOT_USERNAME
              value: root
            - name: MONGO_INITDB_ROOT_PASSWORD
              value: xingdian
          image: mongo
         #image: 10.9.12.201/xingdian/mongo
          imagePullPolicy: IfNotPresent
          name: mongodb
          ports:
            - containerPort: 27017
              name: sss
              protocol: TCP
          resources: {}
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
          volumeMounts:
            - mountPath: /data/db
              name: volume-4ztti
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      terminationGracePeriodSeconds: 30
      volumes:
        - name: volume-4ztti
          nfs:
            path: /data/mongodb
            server: 10.9.12.250
 ---
 apiVersion: v1
 kind: Service
 metadata:
  labels:
    k8s.kuboard.cn/layer: web
    k8s.kuboard.cn/name: mongodb
  name: mongodb
  namespace: mongodb
 spec:
  clusterIP: 10.108.206.134
  clusterIPs:
    - 10.108.206.134
  externalTrafficPolicy: Cluster
  internalTrafficPolicy: Cluster
  ipFamilies:
    - IPv4
  ipFamilyPolicy: SingleStack
  ports:
    - name: 3cmrmd
      nodePort: 30150
      port: 27017
      protocol: TCP
      targetPort: 27017
  selector:
    k8s.kuboard.cn/layer: web
    k8s.kuboard.cn/name: mongodb
  sessionAffinity: None
  type: NodePort
 ```
 	MongoDB-Express项目对应Kubernetes的yaml文件：
 ```
 ---
 apiVersion: apps/v1
 kind: Deployment
 metadata:
  labels:
    k8s.kuboard.cn/layer: web
    k8s.kuboard.cn/name: mongodb-express
  name: mongodb-express
  namespace: mongodb
 spec:
  progressDeadlineSeconds: 600
  replicas: 1
  revisionHistoryLimit: 10
  selector:
    matchLabels:
      k8s.kuboard.cn/layer: web
      k8s.kuboard.cn/name: mongodb-express
  strategy:
    rollingUpdate:
      maxSurge: 25%
      maxUnavailable: 25%
    type: RollingUpdate
  template:
    metadata:
      creationTimestamp: null
      labels:
        k8s.kuboard.cn/layer: web
        k8s.kuboard.cn/name: mongodb-express
    spec:
      containers:
        - env:
            - name: ME_CONFIG_MONGODB_ADMINUSERNAME
              value: root
            - name: ME_CONFIG_MONGODB_ADMINPASSEORD
              value: xingdian
            - name: ME_CONFIG_MONGODB_URL
              value: 'mongodb://root:xingdian@10.9.12.206:30150/'
              #注意这里是连接mongodb的url，其中root是用户，xingdian是密码
          image: 10.9.12.201/xingdian/mongo-express
         #image: mongodb-express
          imagePullPolicy: IfNotPresent
          name: mongodb-express
          ports:
            - containerPort: 8081
              name: qq
              protocol: TCP
          terminationMessagePath: /dev/termination-log
          terminationMessagePolicy: File
      dnsPolicy: ClusterFirst
      restartPolicy: Always
      schedulerName: default-scheduler
      terminationGracePeriodSeconds: 30
 ---
 apiVersion: v1
 kind: Service
 metadata:
  labels:
    k8s.kuboard.cn/layer: web
    k8s.kuboard.cn/name: mongodb-express
  name: mongodb-express
  namespace: mongodb
  resourceVersion: '36330826'
 spec:
  clusterIP: 10.110.224.114
  clusterIPs:
    - 10.110.224.114
  externalTrafficPolicy: Cluster
  internalTrafficPolicy: Cluster
  ipFamilies:
    - IPv4
  ipFamilyPolicy: SingleStack
  ports:
    - name: berrtc
      nodePort: 30151
      port: 8081
      protocol: TCP
      targetPort: 8081
  selector:
    k8s.kuboard.cn/layer: web
    k8s.kuboard.cn/name: mongodb-express
  sessionAffinity: None
  type: NodePort
 ```
 1.浏览器访问MongoDB管理界面
 ![image-20231122100003032](https://diandiange.oss-cn-beijing.aliyuncs.com/image-20231122100003032.png)
 ## 三：MongoDB使用